I do know how to handle event of textboxes in my form. But want to make this code shorter because I will 30 textboxes. It\'s inefficient to use this:
Private
If you have created very Textbox with the Designer, I don't think there is a better method.
But, if you have created the Textboxes dynamically, you should AddHandler in this way:
For i = 0 to 30
Dim TB as New Texbox
AddHandler TB.TextChanged, TextBox1_TextChanged
'Set every Property that you need
Me.Controls.Add(TB)
Next